I should have been clearer. I know that maemo.org developers are coding late into the night on all sorts of truly impressive projects. What I meant to say was that I hope Nokia adopts an FM radio app as a standard part of the software suite when they come out with their Xmas 2009 software update (assuming that is still on track).
I would think that out of the box it'll do more than just A2DP but I could be wrong. I would also guess that it doesn't support every Bluetooth profile except the DUN, HID, and PAN cited in the wiki. In any case it's not something I want to program, it' s something I want to buy.